Kbase P184239: Ultragrid row activate generates error message
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
3/28/2011 |
|
Status: Unverified
SYMPTOM(s):
Ultragrid row activate generates error message
Lead attributes in a chained-attribute expression (a:b:c) must be type HANDLE or a user-defined type and valid (not UNKNOWN). (10068)
Using a reference to a row similar to the following:
myUltraGrid:Rows:Item[0]:Activate() NO-ERROR.
FACT(s) (Environment):
Windows
OpenEdge 10.2x
CAUSE:
Coding error - the Activate method was called at a time where the grid displays no data.
The UltraGrid only creates rows if there is data to display, so in this case the Rows:Item[0] reference doesn't point to an existing row.
FIX:
Check if the UltraGrid actually has rows to display before trying to activate one.
This can be based on the actual data, or by checing the UltraGrid:Rows:Count / UltraGrid:Rows:VisibleRowCount or similar property on the grid itself